MC12×45 MC channel
Detailing dimensions and section properties from the AISC Shapes Database, 16th Edition. Values are shown to the nearest 1/16 in. as they appear on a shop drawing.
MC12×45 measures 12 in. deep with a 4 in. flange and a 11/16 in. web.
At 45 lb per foot it is one of the 7 MC12 sizes, which run from 10.6 to 50 lb/ft.
For strong-axis bending its section modulus is Sx = 41.9 in³ and its moment of inertia Ix = 251 in⁴, with a plastic modulus Zx = 52 in³.
Detailing dimensions
| Depth (d) | 12" |
|---|---|
| Flange width (bf) | 4" |
| Web thickness (tw) | 11/16" |
| Avg flange thickness (tf) | 11/16" |
| k (detailing) | 1 5/16" |
Section properties
| Weight | 45 lb/ft |
|---|---|
| Area (A) | 13.2 in² |
| Ix | 251 in⁴ |
| Sx | 41.9 in³ |
| Zx | 52 in³ |
| rx | 4.36 in |
| Iy | 15.8 in⁴ |
| Sy | 5.3 in³ |
| Zy | 10.1 in³ |
| ry | 1.09 in |
| J | 2.33 in⁴ |
Other MC12 sizes
Same nominal size, different weight — useful when you are checking a substitution or a lighter section.
Similar weight MC channels
Comparable 45 lb/ft sections in other MC channel sizes.
Detailing values are rounded to the nearest 1/16 in. per the AISC Steel Construction Manual. Verify critical dimensions against the current Manual before fabrication. Need MC12×45 cut, formed, or fabricated? Huntington Steel & Supply Co.
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